Investigation of effect of influent concentration on cadmium removal in a fixed- bed column using adsorbent Conocarpus

Document Type : Original Article

Authors

1 razi university

2 Assistant professor, Department of Water Engineering, Razi University, Kermanshah

3 Professor of Environmental Health Engineering, Research Center for Environmental Determinants of Health

4 University of Medical Sciences, Faculty of Environmental Health, Kermanshah, Iran.

Abstract

The presence of heavy metals in the environment due to their harmful effects on human health, regarded as a problem. Today, high-performance biosorbents for wastewater treatment containing heavy metals such as cadmium were developed and are preferable than other absorbents. The aim of this study was investigation of effect of influent concentration on cadmium removal in a fixed- bed column using adsorbent Conocarpus. Conocarpus was prepared from waste vegetable of DEHLORAN city gardens and surface structure of absorbent was investigated. In this study, the effect of influent concentration on cadmium removal wasinvestigatedand Adams- Bohart  and Thomas models were used to the column adsorption modeling. Physical characteristics results showed that the adsorbent has deep pores and complex, intricate, uneven and irregular surface of filamentary structure. The results of breakthrough curves review showed that in higher concentrations, breakthrough time of bed was decreased. breakthrough curves slope increased and breakthrough volume decreased with increasing initial cadmium concentration. Also Adams- Bohart  model has a better fit of the column data

Keywords

References

 
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Irrigation and Water Engineering
Volume 9, Issue 3 - Serial Number 35
January 2019
Pages 182-194

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